基于典型相关分析的散叶烘烤过程中化学成分与烘烤条件的研究

The Research for Chemical Composition and Curing Conditions during Loose Leaf Curing Process Based on Canonical Correlation Analysis

[目的]研究散叶烘烤过程中烘烤条件与烟叶化学成分之间的变化关系。[方法]以淀粉(x1)、叶绿素(x2)、水分(x3)、蛋白质(x4)、总糖(x5)作为烘烤生理指标,以干球温度(y1)、湿球温度(y2)和相对湿度(y3)作为烘烤的物理指标,运用典型相关分析对2组指标进行分析。[结果]试验表明,只有1组变量相关关系达到了极显著水平,典型相关系数为0.993 2,其中u1与烘烤过程中烟叶淀粉(x1)、叶绿素(x2)、水分(x3)和蛋白质(x4)含量的变化存在较高的负相关,而与总糖(x5)含量的变化有较高的正相关,v1与干球温度(y1)存在较高的正相关,而与相对湿度(y3)之间存在较强的负相关,说明散叶烘烤过程中烘烤条件的变化对烟叶化学物质变化的影响较大,且干球温度的影响效果大于湿球温度与相对湿度。[结论]研究可为烟叶散叶烘烤过程中的烘烤条件控制提供参考依据。

[ Objective ] To study the relationship between curing conditions and chemical composition during the process of curing tobacco loose leaf. [ Method ] With starch （ x1 ）, chlorophyll （x2 ）, water （ x3 ）, protein （ x4 ）, total sugar （ x5 ） as curing physiological indicators, and bulb temperature （ y1 ）, wet bulb temperature （ y2 ） and relative humidity （ y3 ） as curing physical indicators, two sets of indicators were analyzed by using canonical correlation analysis. [ Result] The results showed that only one set of variables reached a extremely significant lev el with canonical correlation coefficient of 0.993 2, among which, there was a higher negative correlation between u1 and x1 , x2, x3 and x4, a higher positive correlation between ul and x5 , a higher positive correlation between v1 and Yl , a stronger negative correlation between v1 and Y3, indicating that the curing conditions have a large influence to chemical composition, and the impact of the dry bulb temperature is larger than wet bulb temperature and relative humidity. [ Conclusion] The study can provide reference for conditions control during process of curing tobacco loose leaf.